It’s definitely not a featherweight unit but I’d say probably about 35-40lb. I have it supported with 4 3/16 rope ratchets, one on each corner. No issues so far. 3rd with it and some more very happy plants.
Turned lights down to 50% on the voltage current (2nd screw) then moved seedlings to withing 20 inches, seems a lot better now less heat and no light stress.